Colleagues, I am getting the following error:
Occurs when sending emails via proxmox
RDNS_NONE 1.274 Delivered to internal network by a host with no rDNS
Received: from mail.domain.ru (mail.domain.ru [10.76.1.33])
by mailgw.domain.ru (Proxmox) with ESMTPS id 69E3E20165E...